<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>变量</title>
	<script type="text/javascript">
        var num;
        num = '1,2,3,4,5';
        alert(num);


        var name = '潘莹';
        alert(name);

        num2 = 2+3;
        num3 =39
        num1 = num2+num3;
        alert(num1);


        var num4;
        var x = 10;
        var y = 5;
        num4 = x +y;
        alert(num4);

	</script>
</head>
<body>
	
</body>
</html>